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<html>
	<head>
		<meta charset="UTF-8">
		<title>练习三</title>
	</head>
	<body>
		<h1>h1你过来呀！！</h1>
		<hr  />
		<h2>h2你过来呀！！</h2>
		<hr  size="5"/>
		<h3>h3你过来呀！！</h3>
		<hr size="5" noshade="noshade" />
		<h4>h4你过来呀！！</h4>
		
		<h5>h5你过来呀!!</h5>
		
		<h6>h6你过来呀！！</h6>
		<h7>h7你过来呀！！</h7>
	</body>
</html>
